Today's Catch

Eel, Embedded

"A whitemouth moray eel emerges from the reef following a coral bloom in Honaunau Bay, Hawaii," wrote Barry Fackler of his image , a winning selection in the Portraits of Planet Ocean Flickr contest . Whitemouth morays ( Gymnothorax meleagris ) hide...
Common cuttlefish

Common cuttlefish

Like other cephalopods, the common cuttlefish ( Sepia officials ) is no dummy. But while octopuses are quick to learn manual tasks like opening jars, cuttlefish have a different skillset: the social. Unlike other cephalopod species, cuttlefish are...
This is one of about 200 species of moray eels that live in tropical and subtropical coral reefs.

Guineafowl Moray

This guineafowl moray ( Gymnothorax meleagris ) is one of about 200 species of moray eels found in tropical and subtropical coral reefs . Moray eels are a type of bony fish. Many species, like this one with a brown body and white spots similar to a...

Coralline Algae Under the Microscope

Unlike the green, leafy algae we're used to seeing on the seafloor, coralline algae has a hard crust—which you can see here at the molecular level in a photo from a scanning electron microscope. Each coralline algae cell builds a limestone wall...
A juvenile swimming crab sits on a bed of sargassum seaweed.

Adult Swimming Crab

When they get larger, Portunus sayi are formidable predators, quick to consume any smaller animal that comes within reach. Fish, other crustaceans, and even smaller members of their own species are not safe from this hungry sargassum swimming crab....
A photo of a European flounder in the Baltic Sea.

Flounder Faces Pollution and Overfishing in Baltic Sea

For centuries, the Baltic Sea has provided European flounder ( Platichthys flesus ) and other fish for millions of people to consume. Since the early 1980s, the nations surrounding the sea have coordinated their efforts to protect its health through...
On a seamount peak, a huge colony of brittlestars (likely Ophiacantha rosea) feeds on passing particles.

Millions of Brittlestars

A huge colony of brittlestars (likely Ophiacantha rosea ) covers the peak of a seamount in the deep ocean. What’s the attraction? Food! Their arms reach out for tiny food particles carried by the swift Antarctic Circumpolar Current. More about the...
Two California market squids mate in the waters off of California's Channel Islands.

California Market Squid

Two California market squids ( Loligo opalescens ) mate in the waters off of California's Channel Islands. While spawning, the male's arms blush red as he embraces the female, a warning to other competing males to back-off. Find out how and why...
A shell placed in seawater with increased acidity slowly dissolves over 45 days.

Shell Dissolves in Seawater

Over a 10-year period, NOAA scientists have collected 72,000 seawater samples, and their data show that the ocean is becoming more acidic because of climate change . That small change in acidity is enough to dissolve the shells of animals like this...
An underwater photo of coral recovering from a bleaching event.

Resilient Coral

Is it lights out for corals once they have experienced a bleaching event? Not necessarily. This photo shows a coral reef near Bocas del Toro, Panama that is in the process of recovering from a mass bleaching event that occurred in the summer of 2010...

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